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| 1 | Synthesis, characterization and size control of zerovalent iron nanoparticles anchored on montmorillonite显示文摘Zerovalent iron nanoparticles have been successfully synthesized using sodium borohydride solution reduction of ferric trichloride hexahydrate in the presence of montmorillonite as an effective protective reagent and support as well. A combination of characterizations reveals that with high monodispersity these obtained iron nanoparticles are well dispersed on clay surface, virginal from boron related impurity, and oxidation resistant well with iron core-iron oxide shell structure. The shell thickness of 3 nm remains almost invariable under ambient conditions. The size control of these iron nanoparticles has been achieved by tailoring the amount of the ferric iron, which mainly depends on the protective action of montmorillonite. | FAN MingDe YUAN Peng CHEN TianHu HE HongPing YUAN AiHua CHEN KangMin ZHU JianXi LIU Dong | 2010 | Chinese Science Bulletin2010，55，11： | 15 |
| 2 | Structural Evolvement of Heating Treatment of Mg/AI-LDH and Preparation of Mineral Mesoporous Materials显示文摘Although hydrotalcite, or layered double hydroxides (LDHs), is not a common mineral, it is an important material that can be easily synthesized in laboratory. In this study, structural evolvement and BET surface area changes of heat treated Mg/Al-LDH is evaluated by XRD, TEM and N2-BET analyses. The results indicate that the magnesium-aluminum LDH with carbonate as interlayer anion, periclase-like oxides was formed at temperatures of 400-800℃. Meanwhile, 2-3 nanometer mesoporous were formed during decomposition of LDH. However, the heat treated samples still preserve the morphology of the original LDH plates. Periclase-like formed from LDH heat treatment may re-hydrolyze and recover the structure of LDH. However, crystallinity of the recovered LDH is lower than that of the original LDH. This heat treatment will result in formation of (Mg, Al)-oxide nano-crystals and nanopores among the nano-crystals. When heating temperature exceeds 1000, the periclase-like (Mg, Al)-oxide is transformed into a composite with periclase (MgO) and spinel phases. The periclase can be re-hydrolyzed and dissolved in HCl solution. After acid treatment, the sample with a high surface area is composed of spinel nano-crystals and nanopores among them. Our results will provide a new and economic way to synthesize mesoporous materials through pathways of phase transformation of precursor materials with different composition. | CHEN Tianhu XU Huifang WANG Yifeng QING Chengsong FAN Mingde CHEN Gang | 2006 | Acta Geologica Sinica(English Edition)2006，80，2： | 5 |
| 3 | Removal of hexavalent chromium from aqueous solutions by the diatomite-supported/unsupported magnetite nanoparticles显示文摘 | YUAN Peng LIU Dong FAN Mingde | 2010 | Journal of Hazardous Materials2010，，8： | 1 |
| 4 | magnetite nanoparticles for the removal of hexavalent chromium from aqueous solutions 显示文摘 | Yuan Peng Fan Mingde Yang Dan | 2009 | Journal of Hazardous Materia- ls2009，166，23： | 1 |
| 5 | Montmorillonite-supported magnetite nanopartieles for the removal of hexavalent chromium from aqueous solutions 显示文摘 | Yuan Pang Fan Mingde Yang Dan | 2009 | Journal of Hazardous Materials2009，166，23： | 1 |
| 6 | Decolorization of methylene blue by heterogeneous Fenton reaction using Fe 3? x Ti x O 4 (0<ce:hsp sp='0.25'/>≤<ce:hsp sp='0.25'/> x <ce:hsp sp='0.25'/>≤<ce:hsp sp='0.25'/>0.78) at neutral pH values显示文摘 | Shijian Yang Hongping He Daqing Wu Dong Chen Xiaoliang Liang Zonghua Qin Mingde Fan Jianxi Zhu Peng Yuan | 2009 | Applied Catalysis B Environmental2009，，3： | 1 |
| 7 | Removal of hexavalent chromi-um from aqueous solutions by the diatomite -supported/unsupportedmagnetite nanoparticles显示文摘 | Yuan Peng Liu Dong Fan Mingde | 2010 | Journal of Hazardous Materials t2010，173，13： | 1 |
| 8 | Removal of hexavalent chromium[Cr(Ⅵ)]from aqueous solutions by the diatomite-supported/unsupported magnetite nanoparticles显示文摘 | Yuan Peng Liu Dong Fan Mingde | | 0，，173： | 1 |
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